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The recent introductions of highly pathogenic avian influenza (HPAI) H5N1 virus in wild birds and its subsequent spread throughout Asia, the Middle East, Africa and Europe has put a focus on the role of wild birds in the geographical spread of HPAI H5N1 virus. Large-scale surveillance programs are ongoing to determine a potential role of wild birds in H5N1 virus spread and to serve as sentinel systems...
In order to investigate the prevalence and ecology of the Avian Influenza A virus (AIV) in western Palearctic wild birds, migrating ducks, mainly Mallards (Anas platyrhynchos), have been caught in a funnel trap at the Ottenby Bird Observatory on the Swedish Island Oland. After banding and collection of biometrical data, every individual was sampled for AIV. Since the fall of 2002, more than 3200 samples...
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